Grade 9 2021 Modern Day Braille Displays 3775 Image Credit Humanware Brailliant BI 40 Braille Display Image Credit Amazon 27 Amazon Kindle Paperwhite EReaders Objectives Create a Braille Display Technology that will be ID: 928456
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Slide1
Braille E-Reader
Samuel Kostousov
Grade 9
2021
Slide2Modern Day Braille Displays
$
3,775
Image Credit:
Humanware
Brailliant BI 40 Braille Display
Image Credit:
Amazon
27 Amazon Kindle Paperwhite E-Readers
Slide3Objectives
Create a Braille Display Technology that will be:
Cost affordableE
nergy efficient
Slide4Braille Character
(Six-Cells)
Side View (One Cell)
Moving Platform
Rotating Platform
Stepper Motor
N
S
N
S
Braille Cell Raised
Moving Platform
Rotating Platform
Stepper Motor
N
S
S
N
Braille Cell Down
Braille Cell Raised
Braille Cell Down
Slide5Slide62
H
Microstep
Driver
PUL+
PUL-
DIR+
DIR-
ENBL+
ENBL-
DC-
DC+
A+
A-
B+
B-
SW8
SW7
SW6SW5SW4
SW3SW2SW1
ON ON ON
OFFOFF
ONONON
A-B-A+B+
+
-
Stepper Motor
Arduino Uno Board
Power Bank
(Giving off
24
V)
Power
Slide7Code
#include
<Arduino.h>
#define
PULSE_PIN 8 #define ENABLE_PIN 10
#define DIRECTION_PIN 9
void setup() {
pinMode(PULSE_PIN,OUTPUT);
pinMode(ENABLE_PIN,OUTPUT
); pinMode(DIRECTION_PIN,
OUTPUT); digitalWrite(ENABLE_PIN,
HIGH);}void
loop() { digitalWrite(
PULSE_PIN,LOW); delay(
10); digitalWrite(PULSE_PIN
,HIGH); delay(10
); }Defines the control pins
Includes the Arduino library
Sets the previously defined pins to output pins
Sets the driver to ‘on’ (HIGH)
Moves one step (7.5°) and then repeats
Slide8Problems
Problem:
The micro stepper motor was too weak
Solution: I tested out the technology on a stronger & bigger stepper motorP:
The motor driver could not handle the required 24 volts and melted my apparatus (Fig.1)S: I used a stepper motor driverP: Instead of rising upwards, the moving platform rotated together with the bottom platformS: I made grooves in the moving platform to allow it to only go upwards
140 C
22 CFig.1
Stepper Motor
Slide9Improvements
If I were to redo this project, I would:
Order motors from several different suppliers to make sure at least one would suit my needs.
Minimize the amount of area taken up by the tube surrounding the mechanism.Wire the motor straight to the control board.
Slide10Prices
Material
Price
3D printing filament
Approx. $1-$2
12 mini magnets$0.5Stepper Motor$0.75-$4.50
Overall Price of 1 cell: $2.25-$7.00Overall Price of 1 Braille Character (6 cells): $13.50-$42
My New and Affordable Braille Technology (40 characters, bulk order): $500 - $1680
Brailliant BI 40 Braille Display
VS
My New and Affordable Braille Technology
Slide11Conclusion
Although the price is still high compared to regular e-readers, it’s definitely an improvement from the current e-readers available on the market.
The size isn’t ideal, but this can possibly be improved with the use of smaller stepper motors.
Using smaller stepper motors can also decrease the voltage needed, currently at 24v.
Slide12Extensions & Future Research
Scale down the size
Put together enough cells for at least one characterLower the energy consumption
Have a blind person test out the technologyProgram it to be able to display text files
Slide13Bibliography
Eldridge, A. (2019, Feb 11).
Braille
. Britannica. www.britannica.com/topic/Braille-writing-system
Eldridge, A. (2021, Jan 02).Louis Braille. Britannica. www.britannica.com/topic/Braille-writing-systemNational Federation of the Blind. (2019, January).Blindness Statistics. NFB. www.nfb.org/resources/blindness-statistics
LastMinuteEngineers. (2021).Control Stepper Motor with L298N Motor Driver & Arduino. Last Minute Engineers. https://lastminuteengineers.com/stepper-motor-l298n-arduino-tutorial/Amazon. (2021).Kindle Paperwhite –Now Waterproof with 2 times the Storage. Amazon. https://www.amazon.ca/All-new-Kindle-Paperwhite-Waterproof-Storage/dp/B07HKYZMQX/ref=sr_1_1?crid=1XCH46ZNYVISJ&dchild=1&keywords=kindle+paperwhite&qid=1615321963&sprefix=kindle+p%2Caps%2C231&sr=8-1
Bridges Canada. (2021).Brailliant BI 40 Braille Display. Bridges Canada. www.bridges-canada.com/products/brailliant-bi-40-braille-display
Slide14Image Credit:
BrainPrick
Image Credit:
Techaeris
Image Credit:
Shutterstock